Spray paint crinkle

mike42 said:
.....cleaned with a thiner and let it dry over night. I put two very light coats on and that same spot crinkled again ! Damn.....back to the drawing board !!
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Did you sand it down to bare metal or is there a previous coat of something still on it?
I'd bet there is some sort of contamination on or in that surface.
How to really clean it is for better minds than mine.

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Dms......no not to bare metal. Maybe I should have damnit ! You may be right that something is causing this below the surface.
 
It could be product incompatibility, a topcoat with a hot thinner being applied over air dried enamel. In other words a lacquer -based rattlecan being shot over air-dried enamel. OR more likely it is technique- When the lower basecoat lifts or wrinkles, incompatability of products being ruled out: (1) dust the first coat or two, you don't want a really wet film over the suspect area, it will try to dissolve the base finish. Let it flash off, and dust again. Don't wait too long to recoat, a full recoat over a semi-dried lower coat causes wrinkling. If it continues to act up, you have two options: strip and reprime then repaint, or sand smooth trying not to leave an edge to bare metal and use an enamel-based non-sanding sealer. Shoot it with a couple of light coats PAYING CLOSE ATTENTION TO THE FLASH TIMES AND COAT THICKNESS. You dont have to saturate the piece to gloss it out, work patiently and by the coat. Best of luck. Gary
 
Gary ......

This last time I did as you suggested. Very light dusting on first pass. I waited only a few minutes and dusted again. On the 3rd dust it started to crinkle again ! Damn ?

Could the '57 paint be causing this and not compatible with new rattle can spray ? If so....why doesn't the rest of it crinkle ? I've never had this happen before. I used to shoot lacquer as a kid and I don't remember ever having a prob, but then again I don't remember what I had for breakfast !

Is there a neutralizer that I could spray on it .

Thx......Mike
 
Maybe try wiping the area with acetone a few times an then priming and sanding the area and then paint it?
 
Munster ........ will do, but what is acetone used for in the first place. Just a good cleaning agent ? I have used naphtha for this too.
 
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